Oil filter



April 12, 1927. 1,624,526

H. c.` BoHMsAcK OIL FILTER Filed May 2l. 1926A Q v War/y o/MC l Patented pr. 12, 1.927. p

UNITED STATES y 1,624,526 PATENT OFFICE.

HARRY C. BOHMSACK, OF FORT ATKINSON, WISCONSIN, ASSIGNOR 0F ONE-HALF TO HUGO W. PASSER, OF FORT ATKINSON, WISCONSIN.

OIL FILTER.

Application filed May 21,

.This invention relates to oil filters and vis particularly directed to a gasoline filter.v

Objects of this invention are .tol provide a gasoline filter which may be p'laced in the gasoline supply system ofv an automobile and which will-catch and retain all sediment, trash, or solid matter that may be carried by the gasoline without,.. however, obstructing the flow of the gasoline.

Further objects are to provide a-gasoline filter which is of extremely simple and practical con'struction, and which is so made that the filter sack and container may be most easily removed for cleaning.

Further objects a-re to provide a gasoline filter which is so constructed that the gasoline may be by-passed by'a simple manipulation of the device to thus permit the ready passage of the gasoline through the apparatus without requiring it to pass through the filter sack.

Further objects are to provide a novel form of filter in which means are provided for holding the filtering sack in an extended condition and, if desired, under tension so that. the utmost freedom. of flow for the gasoline is attained without, however, sacrificing .any of the desirable filter characteristics of the apparatus.

An embodiment of the invention is shown in the accompanying drawings in which :--v

Figure 1 is a vertical sectional view through the device.

,Figure 2 is a plan view of the apparatus with parts brokenaway. y

Referring to the drawings, it will be seen that the filter comprises a head l, preferably of circular shape, and equipped with a downwardly extending marginal flange 2. This head is provided with a pair of integral feet or bracket members 3, by means of which they may be attached to the machine.

It is further provided with a pair of outwardly extending pins 4 for the reception of the retaining yoke 5. This retaining yoke is of strap metal and is substantially U-shape.

y It is provided with apertures at its upwardly extending arms for the reception of the pins 4. The lower portion of the yoke is provided with a threaded aperture through which a thumb screw 6 passes. This thumb lscrew has a cup-shaped metal disc 7 swivelly joined to its upper end.

The casing for the filter is of transparent.

material, preferably glass` and is indicated 1926. Serial No. 110,679.

by the reference character 8. It is provided with a bottom annular flange or rib 9 within which the disc 7 is positioned. Preferably the upper marginal portion of this container or casing is thickened, as indicated at 10.

This upper marginal portion fits within theflange r2, and is adapted to contact with a disc-like gasket 11 to secure a tight joint when the thumb screw is tightened.

The gasoline yis led to the device by means of a supply pipe 12, which'enters a` fitting 13 screwed into the upper or head portion 1 of the apparatus. The gasoline leaves the device by way of the outlet pipe 14 which isy .similarly provided with a fitting 15 screwed into the hcadgof the device.

The underside of the head carries a disc i 16 from which the filtering sack 17 is suspended. This disc .A acts as a suspension; member or support for the sack, and also as a valve or by-pass for the gasoline, as will appear hereinafter. It is pivotally or revolubly joined to the head by means of a cenline directly from the inlet -to the outlet aperture the disc 16 is given a 90 turn, and thus places the 'arcuate channel or duct in communication with the two apertures, as shown by imaginary lines in Figure 2.

As stated, the disc 16 carries the filter sack 17 which may be of any suitable, flexible material, such, for instance, as chamois skin,

fabricor other material pervious to gasoline.

This sack is held in place within an annular groove in the disc 16by means of the tensioning ring-like spring 22. Further, the disc carries a cage of small wires, as indicated at 23, which fits within the sack and holds the sack distended.

Under normal conditions, the parts are in the position shown in full lines in the drawing. The gasoline enters through the pipe 12 and passes through the aperture 19. This aperture. it will be noted from Figure'l, is

.angular and passes through the marginal edge of the disc 16. The gasoline, therefore,

is supplied externally of the filter sack 17.

It passes throuo'h the sack and into the interior thereof. DFrom this point the gasoline passes outwardly through the aperture 2() and through the discharge pipe 14.

It is particularly noted from Ireference to Figure l, that the area of the sack presented to the passing gasoline is extensive, and consequently practically no restriction of the flow of gasoline occurs. In proportion to the inlet and outlet openings the expense oi the sack is very great, so that this freedom of flow is attained.

It is apparent that the transparent casing permits ready inspection of the filtering sack, and inasmuch as the solid Inaterials are retained on the outer side of the sack or else collected Within the container 8, such sediment or collected material may be readily seen upon a casual inspection of the apparatus.

lVhen the device has collected a sufhcient amount of material, it may be readily cleaned by merely loosening the thumb screw 6, and removing the container 8. This permits ready removal ot' the sack and allows it to be freely cleaned.

It is clear that when cleaning is to he donethat it is preferable to rotate the disc 16 so as to by-pass the gasoline directly from the inlet to the outlet openings of the head 1. This cuts the gasoline oi from the container 8, and thus allows ready cleaning of the device Without requiring manipulation of any other valves.

It will be seen, further, that a very simple and sturdy type of device has been produced, and one which may be cheaply made and easily installed.

It is to be distinctly understood that although the invention has been described primarily as designed for the filtering of gasoline, that it may be used in filtering other liquids.

Mthough the invention has been described in considerable detail, such description is intended as illustrative rather than limiting as the invention maybe variously embodied` and as the scope of such invention is to be determined as claimed.

I claim:

A tlter comprising a head having inlet and outlet apertures, a casing positioned below said head, means for 'forcn said casing against said head, a disc revolu ly mounted beneath said head and Within said casing, and carrying a lltering sack, said disc having an inlet aperture opening into said casing and having an outlet aperture opening into said sack, said disc also having a bypass duct normally out of communication with the said apertures, and adapted to be placed in communication with the inlet and outlet aperture upon rotation of said disc, whereby said disc may be rotated to by-pass the liquid directly from the inlet to outlet apertures.

In testimony that I claim the foregoing I have hereunto set my hand at Fort Atkinson, in the county of Jederson and State of Wisconsln.

HARRY o. BoHMsAoK. 

